I mean I want the potion to be oily, not for an oily body 
Ages ago I was given a wonderful tub of what seemed like oil with salt and sugar in. I used it in the shower and when I washed it off my skin seemed waterproofed (from the oil) IYSWIM and felt gorgeous.
There were no ingredients on the tub and my friend couldn't remember where she'd bought it. I've tried to replicate this with olive oil and salt and sugar but just end up with oily, scratchy slop. Anyone know how to make a wonderful oily potion for use in the shower?